V21 Parts & Service Manual
All V21 Identified Equipment
REV A – 10/2013
P/N: 1230476
ERROR
PROBABLE CAUSE
CORRECTIVE ACTION
Unit will not run
even in the
compressor test
mode. **NOTE:
Leave the
compressor test
mode on in order
to check for
voltage.
Defective control board.
Remove air dam and check 3-pin connection on power board for 110V
at pins 1 & 3. Turn compressor on in test mode. (See flow chart if 110V
exists).
Defective relay.
Upon opening the door, the lights and compressor should shut off. If
they don’t, replace the door switch.
Refrigeration unit
runs constantly.
Defective door switch.
Upon opening the door, the display should not read “Hello
Welcome…”. If it does, then replace the door switch.
Defective control board
Replace the board.
Defective relay – contacts are
welded together.
Replace power board.
Compressor will
not start.
Overload protector inoperative.
Check overload,(apply insulated jumper across terminal, if compressor
starts replace overload protector.
Defective door switch.
Check for error codes. Replace door switch.
Compressor will
not start,
condenser fan
motor running -
unit hot (power to
compressor).
Starting relay or capacitor
inoperative.
Replace starting relay or capacitor.
Compressor inoperative.
Disconnect power to vender, remove all leads from compressor, check
continuity from “common”, “start” and “run” to compressor case. If
shows continuity, replace compressor (windings shorted). Also check
from common to start, verify that continuity exist between both
terminals.
Compressor starts
but does not run.
Will not cycle.
Check overload and contacts. Replace if needed. Replace Start relay.
Check, replace if needed.
Starting relay stays closed.
Compressor motor problem.
Compressor runs
but cabinet
temperature warm.
Loss of refrigerant.
Replace refrigeration unit, contact SandenVendo America, Inc.
Technical for warranty service. Check for obstruction of fan blades
check circuit to fan motor, replace. Clean lint and dirt from condenser
fins. Check for obstruction of evaporator fan blades, check circuit for
fan motor, replace. Check for moisture on seal adjust inner door as
needed. Replace.
Condenser fan not working.
Blocked or dirty condenser (refer
to initial installation in the service
manual).
Evaporator fan not working.
Bad inner door seal.
Both compressor
and condenser fan
motors will not
operate.
Bad refrigeration control relay.
Test relay with relay test function of the control board, replace relay.
Check wiring connections
Bad connection at power board.
Evaporator frosted
over.
Water at base of evaporator unit.
Check for proper drainage (such as plugged drain, kinks in drain tube,
etc.). Check door seal.
Defective control board.
Replace control board.
Evaporator motor.
Verify 120 Volts exists to evaporator motors.
Defective evaporator motor.
Replace motor.
Product freezing up
(too cold).
Temperature setting too low.
Adjust temperature setting in electronic controller.
Defective temperature sensor.
Replace Temperature sensor.
Excessive noise.
Fan blade hitting shroud.
Relocate shroud position.
Fan motor noisy.
Replace if necessary.
Refrigeration base loose or bent.
Tighten bolt or replace if necessary.
V21 T
roubleshooting Chameleon / Trade / HV3 | T1-18
